Patterns are Beautiful

Math1089, Mathematics for All, Patterns are Beautiful, Pattern with 11 × 89 + 11 = 990 1122 × 89 + 22 = 99880 112233 × 89 + 33 = 9988770 11223344 × 89 + 44 = 998877660 1122334455 × 89 + 55 = 99887766550 112233445566 × 89 + 66 = 9988776655440 11223344556677 × 89 + 77 = 998877665544330 1122334455667788 × 89 + 88 = 99887766554433220 112233445566778899 × 89 + 99 = 9988776655443322110
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